Answer:
put a more clear pic
Step-by-step explanation:
In order to figure out what N is you have to isolate it by dividing by 50 on both sides as shown below:
Two cheaper books = x
more expensive = 1.5x
so, 2.5x=150
150/2.5=x=60
therefore the more expensive book = 90
It would be around 9.304. so you'd round to the nearest tenth 9.3
Area = side * side
Area of the square = 6 1/9 * 6/1/9
= 36 1/81
